Over the past few years, smog has frequently occurred in all parts of the country and attracted a lot of attention. Rhinitis patients are concerned about whether smog is related to rhinitis. Is allergic rhinitis caused by smog? Perhaps there are rhinitis patients who say that they have no illness, normal ventilation, normal sense of smell and no nasal mucus these days. Is this directly related to the low PM 2.5? Yes, maybe not. 1. Let’s look at it first. What is smog? The English abbreviation of particulate matter is PM. At present, our meteorological bureau monitors PM 2.5, that is, pollutant particles with [aerodynamic equivalent] diameter less than or equal to 2.5 microns. Aerodynamic equivalent, in general, is some Read More …